Note: Some of the secret broadcasts may not be available until after completing the main campaign. When the numbers are matched to the corresponding letters of the alphabet, they spell out a hidden message. Use Batman's Cryptographic Sequencer to go to the following coordinates to intercept secret radio broadcasts that read numbers, make a buzzing sound, and then repeat the numbers again. You will still be able to go backwards and not ruin anything in the main campaign. In Catwoman's third mission, when you have the option to go left or right with the 'loot', go right to view the alternate ending. Note: The alternate ending requires the bonus 'Catwoman' downloadable content. Note: If you execute a taunt before performing a glide kick with Batman or Robin, the view will change to the enemy's perspective. Rotate the Right Analog-stick clockwise repeatedly to perform a taunt. Additionally, there will not be any counter icons on thugs, thugs and Bosses will be more difficult, and thugs will have different configurations.

This mode allows you to keep your previously earned gadgets and experience points. Successfully complete the game on the Normal or Hard difficulty to unlock New Game Plus mode. Pull out the Cryptographic Sequencer, then hold L1 + R2 and rotate the Right Analog-stick clockwise ten times to make Batman's head and all enemy head's larger.

If you entered the code correctly, you will hear a sound when you continue your game. At the main menu, press Left(2), Down(2), Left(2), Right, Up(2), Down to unlock an option to select any of the bonus costumes.

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